diff --git a/DeepPATH_code/requirements.txt b/DeepPATH_code/requirements.txt
old mode 100755
new mode 100644
index 01cc97b..15a40e5
--- a/DeepPATH_code/requirements.txt
+++ b/DeepPATH_code/requirements.txt
@@ -96,7 +96,7 @@ lightgbm==2.3.1
 llvmlite==0.36.0
 locket==0.2.0
 logomaker==0.8
-lxml==4.3.2
+lxml==4.9.1
 m2r==0.2.1
 Mako==1.0.7
 Markdown==2.6.11